华北地区震源断层与深浅构造关系的初步研究

使用地震资料（等震线、地表破裂带、地形变、余震平面和剖面分布及震源机制）描述强震震源断层的立体特征。发现震源断层的上界即为由地震测深资料得到的Ｇ界面，并与该界面之下的高倾角深断裂吻合，证明地震时深断裂发生了剪切错动。震源断层与Ｇ界面之上的铲形正断层构成不连接的两套断裂系统，它们之间存在有对应和无对应的复杂关系。

A PRELIMINARY STUDY OF THE RELATION BETWEEN FOCAL FAULTS AND DEEP AND SHALLOW STRUCTURES IN NORTH CHINA AREA

The stereo characteristics of the focal faults of strong earthquakes are described by seismic data (isoseismic, surface rupture zones, ground deformation, plane and section distribution of aftershocks, and focal mechanism). It has been found that the upper bound of the focal fault is the G interface obtained by seismic sounding data and is consistent with the high-dip angle deep fault beneath the interface, which proved that the deep fault underwent a shers disturbance during the earthquake. The focal fault and the listric normal fault on G interface formed two sets of disconnected fanlt systems, there are corresponding and ancorresponding relations between them.